| Place Name | Castle Rock |
| Place Type | Town |
| ZIP Code(s) | 53543 53569 53573 53805 53809 |
| County | Grant County |
| Area Code(s) | 608 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 366 |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Platteville, WI |
| US Congressional District(s) | Wisconsin 3rd |
| State Assembly Districts | 49 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |